I can't say how it compares with other papers, in terms of results/feedback/performance etc from tutoring children over years and years..however, if it's okay, I can say my DD2 found it?
It was the first ever "proper", full-scale paper that she did and we timed it strictly - bad, bad mummy
This was about 3 months ago and she scored 75/80, having only done Bond Assessment before. I've had a quick look at this one and the other GL's she's done over the last few weeks and they kind of look the same, in terms of question-types - but I'll check with her in the morning about how she felt about it. However, I'm no expert, so bow to the wealth of experience that's on this forum and wait with interest